buoyancy
🇺🇸
/ˈbɔɪənsi/
🇬🇧
/ˈbɔɪənsi/
the ability of something to float or to keep something afloat
The shop's success is due to the buoyancy of the local economy.
a feeling of happiness and optimism
Her buoyancy after passing the exam was noticeable.
the state of a market or economy that is strong and growing
Learning about buoyancy is essential for swimmers.